2016 Haas ST-20 CNC Lathe

The Haas ST-20 is a high-performance CNC turning center with a reputation for value and reliability that has made it one of the most popular 8-inch-chuck lathes in job shops and production environments. This 2016 machine pairs a 20 HP, 4,000 RPM main spindle - A2-6 spindle nose, 3.0" bore, 2" bar capacity - with a 12-station turret, handling parts up to 10.3" in diameter and 20.5" long. It comes well equipped with a chip conveyor, tool probe, rigid tapping, a programmable tailstock, and a parts catcher, and runs on the easy-to-use Haas CNC control for fast setups and dependable steel-cutting performance.

Compared to the older Haas SL-20 it replaced, the ST-20 is a meaningfully stiffer and more capable turning center. Haas redesigned the base casting for greater rigidity, added a larger spindle bore and a dual-drive spindle for stronger low-end torque, and moved to the next-generation Haas control with faster processing and easier programming. For a shop stepping up from an SL-20 or a comparable older lathe, that means tighter accuracy, better finishes, and more uptime, all at a used-machine price.